Tips for Staying Warm While Scuba Diving
Staying warm while scuba diving helps you remain comfortable, focused, and ready to enjoy every dive. Even in tropical destinations, prolonged exposure to water, repeated dives, and wind on the boat can leave you feeling cold. The right wetsuit, suitable thermal accessories, and a few simple habits before and between dives can make a noticeable difference. Here’s how to stay warm throughout your dive day without compromising safety.
Key Takeaways
- Choose a wetsuit that suits the water temperature, dive duration, and your individual cold tolerance.
- Protect your head, hands, and feet with appropriate thermal accessories.
- Prepare warm, dry clothing for surface intervals, especially on windy boats.
- Eat adequately, stay hydrated, and avoid unnecessary exposure to cold.
- End your dive if you become uncomfortably cold, and never ignore concerning symptoms.
Why Do You Get Cold While Scuba Diving?
Your body loses heat more quickly in water than in air, even when the water feels relatively warm. The longer you stay submerged, the more heat you can lose, particularly if your exposure protection is inadequate or does not fit properly.
Several factors influence how cold you feel underwater. Water temperature, depth, dive duration, and repeated dives all matter. Your body size, activity level, and individual cold tolerance can also affect your comfort.
Cold can become more noticeable between dives. A wet wetsuit, wind, and evaporative cooling can leave you feeling chilled while sitting on a boat, even in a tropical destination. If you start your next dive already cold, you may become uncomfortable sooner.
Top Tips For Staying Warm While Scuba Diving
Staying warm while scuba diving doesn't have to be complicated. With the right exposure protection and a few simple habits, you can stay comfortable throughout your dive day. Follow these eight practical tips to keep warm before, during, and between dives.
1. Choose the Right Wetsuit for the Water Temperature
Your wetsuit is your first line of thermal protection underwater. The right choice depends on the water temperature, dive duration, and how easily you feel cold.
Thicker wetsuits generally provide more insulation, but thickness alone does not determine warmth. Fit, coverage, and the amount of water entering the suit also matter.
A 3 mm wetsuit may suit many warm-water conditions, while cooler water or longer dives may require thicker neoprene or additional thermal protection. Divers in cold water may need a drysuit with suitable undergarments.
Tip: Choose a wetsuit that fits snugly without restricting your movement or breathing. Gaps around the neck, wrists, and ankles can allow water to circulate through the suit, reducing its insulating effect.
2. Wear a Hood, Gloves, and Boots When Needed
Your head, hands, and feet deserve attention when choosing thermal protection. Suitable neoprene accessories can improve comfort, particularly in cooler water or during longer dives.
A neoprene hood provides additional insulation, while gloves and boots help protect your extremities. Choose their thickness according to the conditions and make sure they fit comfortably.
Tip: Check local diving regulations before wearing gloves, as they may be restricted in some protected marine environments to discourage divers from touching coral.
3. Add Thermal Layers for Extra Insulation
If your regular wetsuit does not provide enough warmth, an appropriate thermal vest or diving undergarment may help reduce heat loss.
Choose layers designed for diving and compatible with your exposure suit. Avoid wearing so many layers that your wetsuit becomes restrictive or affects your ability to operate your equipment.
Tip: If you regularly feel cold during dives, review your entire exposure protection setup rather than relying on extra layers alone.
4. Dress Warmly Before Your Dive
Staying warm starts before you enter the water. Spending time in windy conditions while preparing equipment can leave you feeling cold before the dive even begins.
Wear warm, dry clothing while getting ready, and prepare your equipment in advance to minimize unnecessary exposure. Eating a balanced meal and maintaining normal hydration can also support your energy levels.
Tip: Bring a windproof jacket, a hat, and dry clothes, especially when diving from a boat or in cooler weather.
5. Manage Your Exposure While Diving
Even with suitable equipment, your body continues to lose heat underwater. Your exposure suit should match the planned conditions and dive duration.
Follow your planned dive profile, avoid unnecessary exertion, and pay attention to changes in water temperature. Thermoclines can cause sudden temperature drops at depth, even when surface water feels warm.
Tip: Tell your buddy if you become cold and end the dive safely if the discomfort persists. Never extend a dive simply to complete the plan or stay with the group.
6. Get Dry and Block the Wind Between Dives
Surface intervals are one of the most important opportunities to stay comfortable during a multi-dive day. Wind and wet clothing can make you feel much colder than expected, even in tropical destinations.
After surfacing, remove or loosen your wetsuit when practical and safe, dry yourself with a towel, and change into warm, dry clothing. Wear a windproof layer to reduce the cooling effect of the breeze.
Tip: Keep a dedicated set of dry clothes and a towel in a waterproof bag. A warm, non-alcoholic drink and a suitable snack can also help you feel more comfortable before your next dive.
7. Eat Well and Stay Hydrated
Diving requires energy, and repeated dives can leave you tired. Regular meals, suitable snacks, and adequate hydration support your energy levels and overall wellbeing throughout the day.
Warm drinks can improve comfort during surface intervals, but food and drinks cannot compensate for inadequate thermal protection.
Tip: Pack easy-to-eat snacks and drinking water for longer dive days. Avoid relying on alcohol as a way to warm up.
8. Recognize When You're Getting Too Cold
Feeling chilly is a reason to reassess your comfort, not something you need to tolerate to finish a dive. Persistent shivering, numbness, reduced coordination, and difficulty concentrating can indicate that cold is affecting you.
If you become uncomfortably cold underwater, alert your buddy and follow a safe procedure to end the dive. Once out of the water, move to shelter, remove wet clothing when appropriate, and use dry insulating layers.
Severe or persistent symptoms, confusion, reduced responsiveness, or shivering that stops despite continued cold require urgent medical assessment.
Tip: Do not assume you are ready for another dive just because you have warmed up slightly. If you remain cold, exhausted, or unwell, skip the next dive and prioritize your safety.
Learn more about diving the Red Sea in November, December, and January with Sadko Safari Fleet.
Stay ready for your next dive adventure
Staying warm while scuba diving starts with choosing the right equipment, preparing for the conditions, and taking care of yourself between dives. By following these tips, you can enjoy a more comfortable diving experience while keeping safety a priority.
Need advice on preparing for your next dive? Contact us today! Our team will be happy to help you prepare for your diving adventure and make the most of your time underwater.
FAQs
Why do I get cold while scuba diving in warm water?
Water removes heat from your body faster than air. Even in tropical seas, prolonged dives, repeated exposure, inadequate thermal protection, and wind during surface intervals can leave you feeling cold.
What wetsuit thickness should I wear to stay warm?
The right thickness depends on water temperature, dive duration, individual cold tolerance, and how well the suit fits. A 3 mm wetsuit may suit many warm-water conditions, while cooler water may require thicker neoprene or a drysuit. Ask a qualified local dive professional for advice specific to your conditions.
How can I stay warm between dives on a boat?
Dry off, remove or loosen your wetsuit when practical, change into dry clothing, and wear a windproof jacket. A warm drink and a suitable snack can also help you feel more comfortable before your next dive.
What should I do if I get too cold during a dive?
Tell your buddy, end the dive safely, and get out of the cold. Change into dry clothing when appropriate and warm up gradually. Seek medical assistance if symptoms are severe, persistent, or suggest hypothermia.